<template>
  <div class="icon">
    <swiper :options="swiperOption">
      <swiper-slide v-for="(page, index) of pages" :key="index">
        <div
          class="icons"
          v-for="item of page"
          :key="item.id"
        >
          <div class='icon-img'>
            <img class='icon-img-content' :src='item.imgUrl' />
          </div>
          <p class="icon-desc">{{item.desc}}</p>
        </div>
      </swiper-slide>
    </swiper>
  </div>
</template>

<script>
export default {
  name: 'HomeIcons',
  props: {
    list: Array
  },
  data () {
    return {
      swiperOption: {
        autoplay: false
      }
    }
  },
  computed: {
    pages () {
      const pages = []
      this.list.forEach((item, index) => {
        const page = Math.floor(index / 8)
        if (!pages[page]) {
          pages[page] = []
        }
        pages[page].push(item)
      })
      return pages
    }
  }
}
</script>

<style >
.swiper-container {
  height: 0;
  padding-bottom: 50%;
}

.icons {
  position: relative;
  padding-bottom: 25%;
  width: 25%;
  float: left;
  height: 0;
  overflow: hidden;
}
.icon-img {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0.44rem;
  box-sizing: border-box;
  padding: 0.1rem;
}
.icon-img-content {
  display: block;
  margin: 0 auto;
  height: 100%;
}
.icon-desc {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 0.44rem;
  line-height: 0.44rem;
  text-align: center;
  color: #333;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
</style>
